Sunday, November 25, 2012

Current Impacts: A Table


(Source: Short, Jeff and Andrew Smith. “Mammal Decline and Recovery in Australia.” Journal of
            Mammalogy 75.2 (1994): 288-297. Print.)

The pie charts above show a break down of the recent global recent extinctions from 1988. As can be seen, about half of extinctions globally during this time came from Australia. Of these Australian extinctions, three-fourths are made up of marsupials and rodents. Indeed, many of these extinctions may have resulted from European impacts to the Outback desert. Thus, human disturbances to this ecosystem such as hunting and grazing might have indirectly led to the end of several species in Australia.

The following table further supports the idea that human intervention led to the extinction of animals in Australia. The table records the amount of bounties paid for the killing of different animals in New South Wales from 1883 to 1920. The invasion of Australia by species such as the European rabbit and fox combined with widespread hunting of native mammals may have led to drastic drops in the populations -- and even extinctions -- of certain mammals.



(Source: Short, Jeff and Andrew Smith. “Mammal Decline and Recovery in Australia.” Journal of
            Mammalogy 75.2 (1994): 288-297. Print.)

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